def buildAndStorePreview(obj, event):
u"""
We get a buildAndStorePreview request.
Let's check wether we have to do it or not, depending on options
and test wether file has been modified or not.
If this is ok, call the adapter's method buildAndStorePreview.
"""
logger = logging.getLogger('buildAndStorePreview')
#print "BUILD AND STORE PREVIEW %s on %s" % (obj.getPhysicalPath(),event)
form = obj.REQUEST.form
if form.get('file_delete', 'changed') == "nochange":
msg = ("File field of %s has not changed"
": no preview computation" % "/".join(obj.getPhysicalPath()))
logger.log(logging.INFO, msg)
# file is modified ; dirty preview
previewable.fileModified()
previewable.reindexFilePreview()
return
previewable = IPreviewable(obj)
isPreviewable = getattr(obj, 'isPreviewable', "always")
if isPreviewable == "always":
previewable.buildAndStorePreview()
else:
# file is modified ; dirty preview
previewable.fileModified()
previewable.reindexFilePreview()
msg = ("File's preview option is %s"
": no new preview for %s " % (isPreviewable,
"/".join(obj.getPhysicalPath())))
class PreviewProvider( BrowserView ):
implements( IPreviewProvider )
def __init__(self, context, request):
self.context = context
self.request = request
self.object = IPreviewable(context)
def hasPreview(self):
"""
"""
return self.object.hasPreview()
def getPreview(self):
"""
"""
return self.object.getPreview()
def updatePreview(self):
"""
"""
self.object.buildAndStorePreview()
## XXX This should NOT be here !!
## but I wanted the feature badly...
def updateAllPreviews(self):
"""
"""
pc = self.context.portal_catalog
brains = pc(portal_type='File')
status=""
for brain in brains:
status+="<div>"+brain.getPath()
try:
obj=brain.getObject()
IPreviewable(obj).buildAndStorePreview()
obj.reindexObject()
except Exception, e:
status+=" %s %s</div>" % (str(e.__class__.__name__), str(e))
else:
status+=" OK</div>\n"
return status
class PreviewProvider( BrowserView ):
implements( IPreviewProvider )
def __init__(self, context, request):
self.context = context
self.request = request
self.object = IPreviewable(context)
def hasPreview(self):
u"""
"""
return self.object.hasPreview()
def getPreview(self):
u"""
"""
return self.object.getPreview()
def updatePreview(self):
u"""
"""
self.object.buildAndStorePreview()
def updatePreviewOnDemand(self):
u"""
"""
self.object.buildAndStorePreview()
self.request.response.redirect(self.context.absolute_url()+'/view')
## XXX This should NOT be here !!
## but I wanted the feature badly...
def updateAllPreviews(self, updateNewOnly = False):
u"""
update all objects' preview ; may be usefull if you change a transform
"""
logger = logging.getLogger('UpdateAllPreviewsLog')
pc = self.context.portal_catalog
#brains = pc(portal_type='File')
brains = pc(object_provides="Products.ARFilePreview.interfaces.IPreviewAware",sort_on='modified',sort_order='reverse')
status=""
for brain in brains:
if updateNewOnly and ( brain.lastFileChange < brain.lastPreviewUpdate ):
continue
status+="<div>"+brain.getPath()
logger.log(logging.INFO, brain.getPath())
try:
obj=brain.getObject()
IPreviewable(obj).updatePreview()
obj.reindexObject()
except Exception, e:
msg = "%s %s %s" % (brain.getPath(), str(e.__class__.__name__), str(e))
status+= "%s </div>" % msg
logger.log(logging.ERROR, msg)
else:
msg = "%s OK" % (brain.getPath(),)
status+= "%s </div>" % msg
logger.log(logging.INFO, msg)
try:
transaction.commit()
except Exception, e:
msg = "Commit error on object %s : %s %s ; trying abort" % (brain.getPath(), str(e.__class__.__name__), str(e))
logger.log(logging.ERROR, msg)
try:
transaction.abort()
except:
msg = "Abort error on object %s : %s %s " % (brain.getPath(), str(e.__class__.__name__), str(e))
logger.log(logging.ERROR, msg)
pass